奶牛低淀粉型日粮研究进展  

Research progress of low starch diet for dairy cow

作　　者：王志兰[1] 李发弟[1] 李飞[1] 

机构地区：[1]草地农业生态系统国家重点实验室兰州大学草地农业科技学院,甘肃兰州730020

出　　处：《草业科学》2018年第2期449-455,共7页Pratacultural Science

基　　金：公益性行业(农业)科研专项经费项目(201503134);中央高校基本科研业务费专项资金(lzujbky-2017-48)

摘　　要：低淀粉型日粮的应用不仅可以满足高产奶牛生产阶段的能量需要,而且可以保证奶牛瘤胃健康,避免瘤胃酸中毒。常用低淀粉型饲料有优质牧草、中性洗涤可溶性纤维源饲料以及可溶性糖三大部分。饲喂低淀粉型日粮可以有效缓解挥发性脂肪酸的产生,避免瘤胃pH降低,并促进了奶牛的采食以及养分消化,提高乳品质。本文从低淀粉型日粮的实现手段,以及瘤胃发酵参数和生产性能方面阐述低淀粉型日粮在奶牛生产中的必要性,确立今后的研究重点应该在各种原料替代谷物原料的最适比例及组合效应方面,从而完善奶牛低淀粉型日粮配制技术。Feeding dairy cows on low-starch diets can satisfy their energy requirement during lactation,and protect the rumen health of dairy cows and avoid rumen acidosis,as well. In general,the cows were fed on low-starch diets,containing digestible forage fiber,neutral detergent-soluble fiber,and soluble sugar. Feeding on low-starch diets can effectively reduce volatile fatty acid production,inhibit decrease in ruminal pH,and promote feed intake and nutrient digestion in dairy cows. Additionally,it can improve milk quality. This study showed how to formulate the low-starch diet,influencing rumen fermentation parameters and production performance; it was necessary to feed dairy cows on the low-starch diet. In future,it would be important to investigate the optimal proportion and effect of mixing,using low-starch materials as substitutes of cereal grains,to complete the process of low-starch diet preparation for dairy cows.

关 键 词：低淀粉型日粮 瘤胃发酵参数 生产性能 奶牛 

分 类 号：S823.935[农业科学—畜牧学]